吉林省甜玉米主要数量性状的遗传参数研究

Analysis of Genetic Parameters of Major Quantitative Traits in Sweet Corn

该文通过18个优良甜玉米杂交种的田间随机区组试验,较为系统地研究了17个主要数量性状的有关遗传参数。结果表明,在一定的选择强度下,某数量性状的遗传改良效果主要取决于该性状的变异幅度和广义遗传力。要想在育种实践中获得较好的遗传改良效果,必须从扩大性状的遗传变异幅度和提高遗传力入手,或两者兼有之。

In this experiment, eighteen elite Sweet corn hybrids were grown in the field in a randomized-block and researched the genetic parameters of 17 quantitative traits, its results showed that for most of the traits examined. either the genetic variability or heritablity remains to be improved, in order to gain a better selelction response. Sweet corn breeders should aim at modifying both through various means possible, in combination with these two decide the genetic advance of a quantitative trait, as long as...